While smartphone cases come in all shapes and sizes, pretty much all of them are meant to protect our handsets from dents, drops, and scratches. The Salt cases for iPhone 5, however, are a bit different as they provide resistance against extreme temperatures as well. Why is that important? Well, a smartphone may shut itself down and/or get seriously damaged if exposed to temperatures beyond a certain threshold. The iPhone 5, for example, works best from 32° to 95° F, but may malfunction if it gets way too cold or too hot. Moreover, excessive temperatures may seriously shorten any battery's life span.

Naturally, Salt cases work by blocking heat, but the way they do that is a bit more complex than you would expect. In fact, they use the same material that NASA protects its equipment with against heat emitted by rocket engines and the coldness of outer space. Thanks to that and the company's Saltbloc "thermal layering technology", Salt cases successfully tackle "the mechanics of heat transfer: radiation, convection and conduction." They look pretty stylish as well, we must add. Red, green, tan, brown and black are the colors Salt cases will be available in.

But before Salt cases for the iPhone 5 hit the market, their makers will need your financial support. That's where crowdfunding comes into play – people interested in buying a Salt case may back up the project via Kickstarter. If the $27 000 is raised before the September 23 deadline, then early backers will get their Salt cases before the end of next month. For more details, check out the project's page on Kickstarter.

Look closely at the 5th picture. The case has a built in case to cover the sides of the iPhone and hold it in place. It looks like the only opening on the sides is right by the volume and vibrate switch. Hopefully, they've done enough testing to make sure that opening isn't too big to cause the zipper to rub and strip the paint off of the aluminum.

Actually, I designed it and as the poster said above you can clearly see that the holder for the phone protects against the zipper. We have tested these case for over a year and never had a single scratch from the zipper.

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